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首页> 美国卫生研究院文献>Materials >Reuse of Textile Dyeing Effluents Treated with Coupled Nanofiltration and Electrochemical Processes
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Reuse of Textile Dyeing Effluents Treated with Coupled Nanofiltration and Electrochemical Processes

机译：纳滤和电化学过程耦合处理的纺织印染废水的再利用

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The reactive dye Cibacron Yellow S-3R was selected to evaluate the feasibility of combining nanofiltration membranes with electrochemical processes to treat textile wastewater. Synthetic dyeing effluents were treated by means of two nanofiltration membranes, Hydracore10 and Hydracore50. Up to 98% of dye removal was achieved. The influence of salt concentration and pH on membrane treatment was studied. The best dye removal yield was achieved at pH 3 in the presence of 60 g/L of NaCl. After the membrane filtration, the concentrate containing high dye concentration was treated by means of an electrochemical process at three different current densities: 33, 83, and 166 mA/cm2. Results showed a lineal relationship between treatment time and applied current density. Both permeates and electrochemically-decoloured effluents were reused in new dyeing processes (100% of permeate and 70% of decoloured concentrates). Dyed fabrics were evaluated with respect to original dyeing. Colour differences were found to be into the acceptance range.
机译：选择了活性染料Cibacron Yellow S-3R，以评估将纳滤膜与电化学工艺结合处理纺织品废水的可行性。合成染色废水通过两个纳米过滤膜Hydracore10和Hydracore50进行处理。达到了98％的染料去除率。研究了盐浓度和pH值对膜处理的影响。在60 g / L NaCl的存在下，在pH 3下获得了最佳的染料去除率。膜过滤后，通过电化学方法在三种不同的电流密度：33、83和166 mA / cm 2 下处理含有高染料浓度的浓缩液。结果表明治疗时间和施加的电流密度之间存在线性关系。渗透液和经电化学脱色的流出物均在新的染色工艺中重复使用（100％的渗透液和70％的脱色浓缩液）。对染色的织物进行原始染色评估。发现色差在可接受范围内。

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